WO2020137969A1 - Flow rate switch and electric pump equipped with same - Google Patents

Flow rate switch and electric pump equipped with same Download PDF

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Publication number
WO2020137969A1
WO2020137969A1 PCT/JP2019/050338 JP2019050338W WO2020137969A1 WO 2020137969 A1 WO2020137969 A1 WO 2020137969A1 JP 2019050338 W JP2019050338 W JP 2019050338W WO 2020137969 A1 WO2020137969 A1 WO 2020137969A1
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WO
WIPO (PCT)
Prior art keywords
paddle
water receiving
flow
edge portion
flow path
Prior art date
Application number
PCT/JP2019/050338
Other languages
French (fr)
Japanese (ja)
Inventor
亮 都築
章宏 窪田
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2018242269A external-priority patent/JP7170186B2/en
Priority claimed from JP2019010770A external-priority patent/JP2020118573A/en
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2020137969A1 publication Critical patent/WO2020137969A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter

Definitions

  • the present disclosure relates to a flow switch and an electric pump with a flow switch.
  • the pump 201 includes an electric motor 202, a pump casing 203, and a flow rate switch 204.
  • a flow switch 204 is provided on the discharge port 205 side of the pump 201, a paddle 206 of the flow switch 204 is arranged in a tubular flow path, and it is rotated by water flowing inside the pipe. At this time, the magnet 207 provided on the paddle 206 approaches the reed switch 208 provided outside the flow path, and the reed switch 208 operates to start the pump 201.
  • a flow switch includes a base having a reed switch, a paddle casing fixed to the base, a paddle connected to the paddle casing, and a reed switch activated. And a switch activation unit.
  • the paddle casing has a paddle flow path through which liquid flows.
  • the paddle includes a water receiving portion, a paddle rotating shaft, and a holding portion, and is connected to the paddle casing via the paddle rotating shaft.
  • the switch starting unit is held by the holding unit.
  • the water receiving portion is arranged on the paddle flow path and has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path.
  • the flow rate switch according to the present disclosure can increase the surface area of the water receiving portion of the paddle with respect to the water flow to efficiently convert the force received by the water receiving portion from the water into the force for opening the paddle. Can be activated in response to.
  • the electric pump according to the present disclosure includes the above-mentioned flow rate switch, it can be activated by reacting sharply even with a small flow rate.
  • FIG. 1 is a schematic side half cross-sectional view showing an electric pump according to Embodiment 1-1 of the present disclosure.
  • FIG. 2 is a perspective view of the electric pump.
  • FIG. 3 is a schematic view of a side cross section of the same flow rate switch mounting portion.
  • FIG. 4 is a perspective view of the paddle.
  • FIG. 5 is a perspective view of the paddle casing.
  • FIG. 6 is a schematic side cross-sectional view of the same flow rate switch mounting portion when a water flow is generated.
  • FIG. 7A is a schematic side sectional view of the paddle.
  • FIG. 7B is a schematic side sectional view of the flat paddle.
  • FIG. 8 is an exploded perspective view of the same flow rate switch.
  • FIG. 1 is a schematic side half cross-sectional view showing an electric pump according to Embodiment 1-1 of the present disclosure.
  • FIG. 2 is a perspective view of the electric pump.
  • FIG. 3 is a schematic view of a side cross section of the same
  • FIG. 9A is a schematic side cross-sectional view showing an inclination angle of a paddle according to Embodiment 1-2 of the present disclosure.
  • FIG. 9B is a schematic side sectional view showing an inclination angle of the paddle according to the embodiment 1-2 of the present disclosure.
  • FIG. 10 is a schematic side sectional view showing the structure of the embodiment 1-3 of the present disclosure.
  • FIG. 11 is a schematic side half cross-sectional view showing an electric pump according to Embodiment 2-1 of the present disclosure.
  • FIG. 12 is a perspective view of the electric pump.
  • FIG. 13 is a schematic view of a side cross section of the same flow rate switch mounting portion.
  • FIG. 14 is an exploded perspective view of the same flow rate switch.
  • FIG. 15 is a perspective view of the paddle.
  • FIG. 16 is a side sectional view of the paddle and the paddle casing.
  • FIG. 17 is a perspective view of the paddle casing.
  • FIG. 18 is a schematic side cross-sectional view of the same flow rate switch mounting portion when a water flow is generated.
  • FIG. 19 is a perspective view of the paddle according to the embodiment 2-2 of the present disclosure.
  • FIG. 20 is a perspective view of the paddle casing.
  • FIG. 21 is a side sectional view of the paddle and the paddle casing.
  • FIG. 22 is a schematic diagram showing a conventional pump with a flow rate switch.
  • a flow switch includes a base having a reed switch, a paddle casing fixed to the base, a paddle connected to the paddle casing, and a switch activator that activates the reed switch.
  • the paddle casing has a paddle flow path through which liquid flows.
  • the paddle includes a water receiving portion, a paddle rotating shaft, and a holding portion, and is connected to the paddle casing via the paddle rotating shaft.
  • the switch starting unit is held by the holding unit.
  • the water receiving portion is arranged on the paddle flow path and has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path.
  • the surface area of the water receiving portion of the paddle with respect to the water flow can be increased as compared with the flat paddle, so that the force received from water can be efficiently converted into the force for opening the paddle. ..
  • the flow rate switch reacts sharply and is activated, so that it is possible to provide a high-quality flow rate switch.
  • the water receiving portion has a first inclined portion and a second inclined portion, and the first inclined portion is located closer to the tip side than the second inclined portion. Then, when the paddle is closed, the angle at which the first inclined portion inclines toward the downstream side of the liquid flowing through the paddle channel is ⁇ 1, and the second inclined portion inclines toward the downstream side of the liquid flowing through the paddle channel. If the angle to be set is ⁇ 2, the configuration may be such that ⁇ 1> ⁇ 2.
  • the surface area of the tip end side of the water receiving part through which a large amount of water flows can be increased, so that the water receiving part receives power from the water efficiently. Therefore, the force received from water can be collected on the tip side of the water receiving portion and efficiently converted into the force for opening the paddle, and the flow rate switch can be sensitively activated even at a smaller flow rate.
  • the water receiving portion may have a water receiving edge portion on the bottom surface, and when the paddle is closed, the water receiving edge portion may overlap the flow passage edge portion that is the periphery of the paddle flow passage.
  • the inner surface of the water receiving edge and the inner surface of the flow path edge may be configured to coincide with each other on the tip side of the water receiving section.
  • water can be smoothly guided from the paddle flow path to the water receiving section, so that the force received from the water by the water receiving section can be more efficiently converted into the force for opening the paddle.
  • the paddle may be configured to have a protrusion that comes into contact with the flow path edge portion around the paddle flow path when the paddle is closed.
  • the projection may be provided on the water receiving edge.
  • the protrusion may be provided on the water receiving edge portion at the tip of the paddle.
  • the protrusion may have a size such that it does not protrude directly above the paddle flow channel when it comes into contact with the flow channel edge, but is sized to fit directly above the flow channel edge.
  • the paddle casing may be configured to have a protrusion that comes into contact with the water receiving portion when the paddle is closed.
  • the protrusion may be provided on the edge of the flow path around the paddle flow path.
  • the protrusion can be placed in a place that does not easily obstruct the flow of water, so that a better quality flow rate switch can be provided.
  • the protrusion may be configured so that it does not protrude directly above the paddle flow passage but fits directly above the edge of the flow passage.
  • the projection may contact the water receiving edge portion at the tip of the paddle when the paddle is closed.
  • an electric pump includes the above flow rate switch.
  • Embodiment 1 includes at least Embodiment 1-1, Embodiment 1-2 and Embodiment 1-3 below.
  • Embodiment 1-1) 1 and 2 show an electric pump according to Embodiment 1-1 of the present disclosure.
  • the electric pump 1 includes a motor 2 and a pump casing 3.
  • the pump casing 3 has a suction port 4 and a discharge port 5.
  • the flow rate switch 6 is attached to the discharge port 5 side of the pump casing 3.
  • the motor 2 has a rotating shaft 11.
  • the impeller 7 is fixed to the protruding portion at one end of the rotating shaft 11.
  • the impeller 7 is arranged so as to be included in the pump casing 3.
  • a cooling fan 10 is provided on the protruding portion of the other end of the rotating shaft 11 on the side opposite to the one end of the rotating shaft 11 to which the impeller 7 is fixed.
  • the fan cover 9 is fixed to the motor 2 and covers the cooling fan 10.
  • a terminal cover 8 is provided on the top of the motor 2.
  • the terminal cover 8 is fixed to the motor 2.
  • the power of the motor 2 is transmitted to the impeller 7 via the rotating shaft 11, and the impeller 7 rotates.
  • the water (liquid) sucked from the suction port 4 is discharged from the discharge port 5 by the rotation of the impeller 7.
  • the flow rate switch 6 is composed of a base 12, a paddle casing 13, a paddle 14, a switch activation unit 18 and a cover 15.
  • the base 12 is provided with a substrate 16.
  • the substrate 16 is provided with a reed switch 17, and has a circuit for turning on/off the electric pump 1 based on a signal from the reed switch 17.
  • the cover 15 is fixed to the base 12.
  • the paddle casing 13 is fixed to the base 12.
  • the paddle 14 includes a water receiving portion 19, a paddle rotating shaft 20, a holding portion 21, and a spring 30.
  • the switch activation unit 18 is, for example, a magnet, and is fixed to the holding unit 21.
  • a water receiving edge portion 22 is provided on the bottom surface of the water receiving portion 19. That is, the bottom surface of the water receiving portion 19 is an opening, and the water receiving edge portion 22 is provided in the opening.
  • the paddle 14 is connected to the paddle casing 13 via the paddle rotation shaft 20.
  • the paddle casing 13 has a paddle flow path 26 through which liquid flows.
  • a flow path edge portion 27 is provided around the paddle flow path 26.
  • the paddle casing 13 is provided with an insertion opening 28 into which the paddle rotation shaft 20 is inserted.
  • the paddle 14 is held by the paddle casing 13 by inserting the paddle rotation shaft 20 into the insertion port 28, but the present invention is not limited to this.
  • a holding portion may be provided so as to project inside the paddle casing 13 to hold the paddle rotation shaft 20.
  • the water receiving portion 19 of the paddle 14 is arranged on the paddle flow path 26 of the paddle casing 13 in a state where the paddle 14 is connected to the paddle casing 13.
  • the water receiving portion 19 has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path 26.
  • the upper side in FIG. 6 is the downstream side and the lower side is the upstream side.
  • the water flow 23 shown in FIG. 6 is generated by relaxing the water pressure of the water pipe connected to the paddle flow path 26 by opening the tap of the water supply, for example.
  • the paddle 14 rotates about the paddle rotation shaft 20 in the opening direction (downstream side).
  • the reed switch 17 is activated when the switch activation unit 18 approaches the reed switch 17.
  • the activation signal of the reed switch 17 is transmitted to the motor 2 via the board 16 and the motor 2 is activated.
  • the motor 2 is started, the power of the motor 2 is transmitted to the impeller 7 via the rotating shaft 11, and the impeller 7 rotates.
  • the electric pump 1 is activated by such steps, and the water flow 23 can be increased.
  • the paddle 14 is always given a force in the closing direction (upstream side) by the spring 30. Therefore, by closing the faucet of the water supply, the water flow 23 decreases, and the paddle 14 rotates in the closing direction around the paddle rotation shaft 20. Then, the switch activation unit 18 moves away from the reed switch 17, the reed switch 17 stops, and the electric pump 1 stops.
  • FIG. 7A shows a paddle 14 in which the water receiving portion 19 according to the present embodiment is bowl-shaped
  • FIG. 7B shows a flat paddle 24 in which the water receiving portion 29 is flat.
  • the water receiving portion 29 of the flat paddle 24 has a flat shape, whereas the water receiving portion 19 of the paddle 14 has a bowl shape which is recessed toward the downstream side. Therefore, the paddle 14 has a larger surface area of the water receiving portion 19 with respect to the water flow 23. Therefore, the force received from the water stream 23 can be efficiently converted into the force for opening the paddle 14.
  • the flow rate switch 6 when the electric pump 1 is stopped, the flow rate switch 6 can be sensitively activated and activated even when the flow rate flowing through the paddle flow path 26 is small. And the electric pump 1 can be provided.
  • FIG. 8 shows an exploded perspective view of the flow rate switch 6 of the present embodiment.
  • FIG. 9A and 9B are schematic views of immediate cross sections showing the tilt angles of the paddles according to Embodiment 1-2 of the present disclosure. Note that FIG. 9B is an enlarged view of a portion A surrounded by a chain double-dashed line in FIG. 9A.
  • the water receiving portion 19A of the paddle 14A has a first inclined portion 19a and a second inclined portion 19b.
  • the first inclined portion 19a of the water receiving portion 19A is located closer to the tip end side of the paddle 14A than the second inclined portion 19b.
  • the angle at which the first inclined portion 19a inclines toward the downstream side of the liquid (water flow 23) flowing through the paddle flow passage 26 of the paddle casing 13 is ⁇ 1
  • the downstream of the liquid flowing through the paddle flow passage 26 is ⁇ 2
  • the force received from the water flow 23 can be collected at the tip side of the water receiving portion 19A and can be efficiently converted into the force that opens the paddle 14A, so that the flow rate switch 6 reacts sharply with a smaller flow rate and is activated.
  • the flow rate switch 6 and the electric pump 1 having good quality can be provided.
  • Embodiment 1-3 10 components similar to those in Embodiments 1-1 and 1-2 are designated by the same reference numerals, and detailed description thereof will be omitted.
  • the water receiving edge portion 22 of the water receiving portion 19B preferably overlaps the flow passage edge portion 27 which is the periphery of the paddle flow passage 26.
  • the inner surface 22a of the water receiving edge portion 22 provided on the bottom surface of the water receiving portion 19B and the inner surface 27a of the flow channel edge portion 27 of the paddle flow channel 26 have the same configuration. Preferably.
  • the second embodiment is to solve the above-described conventional problems, and an object thereof is to provide a flow rate switch that suppresses sticking of the paddle.
  • the contact area between the paddle casing and the paddle becomes small when the paddle is closed. As a result, it is possible to prevent the paddle casing and the paddle from sticking to each other and reduce the malfunction of the flow rate switch.
  • the second embodiment includes at least the following second embodiment 2-1 and second embodiment 2-2.
  • the electric pump 101 includes a motor 102 and a pump casing 103.
  • the pump casing 103 has a suction port 104 and a discharge port 105.
  • the flow rate switch 106 is attached to the discharge port 105 side of the pump casing 103.
  • the motor 102 has a rotating shaft 111.
  • the impeller 107 is fixed to the protruding portion at one end of the rotating shaft 111.
  • the impeller 107 is arranged so as to be included in the pump casing 103.
  • a cooling fan 110 is provided on the protruding portion at the other end of the rotating shaft 111, on the side opposite to the one end of the rotating shaft 111 to which the impeller 107 is fixed.
  • the fan cover 109 is fixed to the motor 102 and covers the cooling fan 110.
  • a terminal cover 108 is provided on the top of the motor 102.
  • the terminal cover 108 is fixed to the motor 102.
  • the power of the motor 102 is transmitted to the impeller 107 via the rotating shaft 111, and the impeller 107 rotates.
  • the water (liquid) sucked from the suction port 104 is discharged from the discharge port 105 as the impeller 107 rotates.
  • the flow rate switch 106 includes a base 115, a paddle casing 116, a paddle 117, a switch activation unit 121, and a cover 118.
  • the base 115 is provided with a substrate 119.
  • the board 119 includes a reed switch 120, and has a circuit for turning on/off the electric pump 101 based on a signal from the reed switch 120.
  • the cover 118 is fixed to the base 115.
  • the paddle casing 116 is fixed to the base 115.
  • the paddle 117 includes a water receiving portion 130, a paddle rotating shaft 131, a holding portion 132, and a spring 134.
  • a water receiving edge portion 133 is provided on the bottom surface of the water receiving portion 130. That is, the bottom surface of the water receiving portion 130 is an opening, and the water receiving edge portion 133 is provided in the opening.
  • the tip of the water receiving portion 130 is a paddle tip 139.
  • the paddle 117 is connected to the paddle casing 116 via the paddle rotation shaft 131.
  • the switch activation unit 121 includes a magnet 135 and the like and is fixed to the holding unit 132.
  • the paddle casing 116 has a paddle channel 136 and a channel edge portion 138 through which the liquid flows.
  • the paddle casing 116 is provided with an insertion opening 137 into which the paddle rotation shaft 131 is inserted.
  • the water receiving portion 130 of the paddle 117 is arranged on the paddle flow path 136 of the paddle casing 116.
  • the flow path edge 138 has a protrusion 122.
  • the projection 122 contacts the water receiving edge portion 133 when the paddle 117 is closed, thereby reducing the contact area between the water receiving edge portion 133 and the flow path edge portion 138.
  • the water flow 140 shown in FIG. 18 may be generated by relaxing the water pressure of the water pipe connected to the paddle flow path 136 by opening the tap of the water supply, for example. it can.
  • the reed switch 120 is activated when the switch activation unit 121 approaches the reed switch 120.
  • the activation signal of the reed switch 120 is transmitted to the motor 102 via the board 119, and the motor 102 is activated.
  • the motor 102 is activated, the power of the motor 102 is transmitted to the impeller 107 via the rotating shaft 111, and the impeller 107 rotates.
  • the electric pump 101 is activated in such steps, and the water flow 140 can be increased.
  • a force is always applied to the paddle 117 by the spring 134 in the closing direction. Therefore, by closing the faucet of the water supply, the water flow 140 is reduced, and the paddle 117 rotates in the closing direction around the paddle rotation shaft 131. Then, when the switch activator 121 moves away from the reed switch 120, the reed switch 120 stops and the electric pump 101 stops.
  • the protrusion 122 is provided on the flow path edge portion 138, does not project directly above the paddle flow path 136, and has a size that fits directly above the flow path edge portion 138.
  • the protrusion 122 it is possible to prevent the protrusion 122 from existing on the liquid flow path. As a result, the protrusions 122 can be less likely to obstruct the water flow 140 created by the electric pump 101, so that the electric pump 101 of higher quality can be provided.
  • the projection 122 comes into contact with the water receiving edge portion 133 of the paddle tip portion 139 when the paddle 117 is closed.
  • the projection 122 may be anything that comes into contact with the water receiving edge portion 133 when the paddle 117 is closed, it is provided on a portion other than the flow passage edge portion 138 (for example, the inner wall 141 above the flow passage edge portion 138). May be
  • Embodiment 2-2 19, 20, and 21, the same components as those in Embodiment 2-1 are designated by the same reference numerals, and detailed description thereof will be omitted.
  • the projection 142 may be provided on the water receiving edge portion 133 of the water receiving portion 130 of the paddle 117A.
  • the projection 142 comes into contact with the flow path edge 138, thereby suppressing the contact area between the water receiving edge 133 and the flow path edge 138.
  • the paddle casing 116A is not provided with the protrusion 122.
  • FIG. 21 shows a side sectional view of the paddle 117A and the paddle casing 116A of the present embodiment.
  • the projection 142 is provided on the water receiving edge portion 133, and when contacting with the flow path edge portion 138, the projection 142 does not project directly above the paddle flow path 136 but has a size that can be accommodated directly above the flow path edge portion 138. preferable.
  • the protrusion 142 can be less likely to obstruct the water flow 140 created by the electric pump 101, and thus the electric pump 101 of higher quality can be provided.
  • the protrusion 142 is preferably provided on the water receiving edge 133 of the paddle tip 139.
  • the flow rate switch or the electric pump according to the present disclosure is effective as a flow rate switch or an electric pump or the like that can be activated by reacting sensitively even with a small flow rate because the paddle can be opened and closed even with a small flow rate. Further, the flow rate switch or the electric pump according to the present disclosure can suppress the sticking of the paddle and the paddle casing, and thus is useful as a flow rate switch or an electric pump or the like that uses a paddle opening/closing mechanism.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Cookers (AREA)

Abstract

This flow rate switch (6) is provided with: a base (12) having a lead switch (17); a paddle casing (13) fixed to the base (12); a paddle (14) connected to the paddle casing (13); and a switch start part (18) that starts the lead switch (17). The paddle casing (13) has a paddle flow passage through which a liquid flows. The paddle (14) includes a water receiving part, a paddle rotating shaft, and a holding part and is connected to the paddle casing (13) via the paddle rotating shaft. The switch start part (18) is held by the holding part, and the water receiving part is disposed in the paddle flow passage and has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow passage.

Description

流量スイッチおよびこれを備えた電動ポンプFlow switch and electric pump equipped with the same
　本開示は、流量スイッチおよび流量スイッチ付き電動ポンプに関するものである。 The present disclosure relates to a flow switch and an electric pump with a flow switch.
　従来、流量スイッチ付き電動ポンプは、吐出口後方に流量スイッチが設けられたものが知られている（例えば、特許文献１参照）。 Conventionally, it is known that an electric pump with a flow rate switch is provided with a flow rate switch behind the discharge port (see, for example, Patent Document 1).
　以下、そのポンプについて図２２を参照しながら説明する。 The pump will be described below with reference to FIG.
　図２２に示すように、ポンプ２０１は、電動機２０２、ポンプケーシング２０３、流量スイッチ２０４で構成されている。 As shown in FIG. 22, the pump 201 includes an electric motor 202, a pump casing 203, and a flow rate switch 204.
　ポンプ２０１の吐出口２０５側に流量スイッチ２０４が設けられ、流量スイッチ２０４のパドル２０６が筒状の流路に配置され、配管内部を流れる水によって回転する。この際、パドル２０６に備えられたマグネット２０７が、流路の外側に備えるリードスイッチ２０８に近づき、リードスイッチ２０８が動作することでポンプ２０１が起動する。 A flow switch 204 is provided on the discharge port 205 side of the pump 201, a paddle 206 of the flow switch 204 is arranged in a tubular flow path, and it is rotated by water flowing inside the pipe. At this time, the magnet 207 provided on the paddle 206 approaches the reed switch 208 provided outside the flow path, and the reed switch 208 operates to start the pump 201.
特開２００９－３６１４９号公報JP, 2009-36149, A
　このような従来の流量スイッチ付き電動ポンプにおいては、フラット形状のパドルが使われているため、少ない水流の場合にパドルの開く角度が小さい。このため、少流量でのポンプの起動が難しいという課題を有している。 In such a conventional electric pump with a flow switch, a flat paddle is used, so the opening angle of the paddle is small when there is little water flow. Therefore, there is a problem that it is difficult to start the pump at a small flow rate.
　そこで本開示は、上記従来の課題を解決するものであり、パドルの形状を変更することで、水流に対して鋭敏な反応が可能な流量スイッチを提供することを目的とする。また、本開示は、そのような流量スイッチを備えた、水流に対して鋭敏な反応が可能でより品質の高い電動ポンプを提供することを目的とする。 Therefore, the present disclosure is to solve the above-mentioned conventional problems, and an object thereof is to provide a flow rate switch capable of reacting sensitively to a water flow by changing the shape of the paddle. Another object of the present disclosure is to provide an electric pump having such a flow rate switch and capable of reacting sensitively to water flow and having higher quality.
　そして、この目的を達成するために、本開示の一態様に係る流量スイッチは、リードスイッチを有するベースと、ベースに固定されたパドルケーシングと、パドルケーシングに接続されたパドルと、リードスイッチを起動させるスイッチ起動部とを備える。パドルケーシングは、液体が流れるパドル流路を有する。パドルは、水受け部、パドル回転軸および保持部を含み、パドル回転軸を介してパドルケーシングに接続される。スイッチ起動部は保持部に保持される。水受け部は、パドル流路上に配置され、パドル流路を流れる液体の下流側に向かって凹むおわん形状を有する。 Then, in order to achieve this object, a flow switch according to an aspect of the present disclosure includes a base having a reed switch, a paddle casing fixed to the base, a paddle connected to the paddle casing, and a reed switch activated. And a switch activation unit. The paddle casing has a paddle flow path through which liquid flows. The paddle includes a water receiving portion, a paddle rotating shaft, and a holding portion, and is connected to the paddle casing via the paddle rotating shaft. The switch starting unit is held by the holding unit. The water receiving portion is arranged on the paddle flow path and has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path.
　本開示に係る流量スイッチは、水流に対するパドルの水受け部の表面積を大きくすることで、水受け部が水から受ける力を効率よくパドルを開く力に変換することができるため、少流量でも鋭敏に反応して起動できる。 The flow rate switch according to the present disclosure can increase the surface area of the water receiving portion of the paddle with respect to the water flow to efficiently convert the force received by the water receiving portion from the water into the force for opening the paddle. Can be activated in response to.
　また、本開示に係る電動ポンプは上記流量スイッチを備えているため、少流量でも鋭敏に反応して起動できる。 Also, since the electric pump according to the present disclosure includes the above-mentioned flow rate switch, it can be activated by reacting sharply even with a small flow rate.
図１は、本開示の実施の形態１－１の電動ポンプを示す側半断面の概略図である。FIG. 1 is a schematic side half cross-sectional view showing an electric pump according to Embodiment 1-1 of the present disclosure. 図２は、同電動ポンプの斜視図である。FIG. 2 is a perspective view of the electric pump. 図３は、同流量スイッチ取付部側断面の概略図である。FIG. 3 is a schematic view of a side cross section of the same flow rate switch mounting portion. 図４は、同パドルの斜視図である。FIG. 4 is a perspective view of the paddle. 図５は、同パドルケーシングの斜視図である。FIG. 5 is a perspective view of the paddle casing. 図６は、同流量スイッチ取付部における水流発生時の側断面の概略図である。FIG. 6 is a schematic side cross-sectional view of the same flow rate switch mounting portion when a water flow is generated. 図７Ａは、同パドルの側断面の概略図である。FIG. 7A is a schematic side sectional view of the paddle. 図７Ｂは、フラットパドルの側断面の概略図である。FIG. 7B is a schematic side sectional view of the flat paddle. 図８は、同流量スイッチの分解斜視図である。FIG. 8 is an exploded perspective view of the same flow rate switch. 図９Ａは、本開示の実施の形態１－２のパドルの傾斜角度を示す側断面の概略図である。FIG. 9A is a schematic side cross-sectional view showing an inclination angle of a paddle according to Embodiment 1-2 of the present disclosure. 図９Ｂは、本開示の実施の形態１－２のパドルの傾斜角度を示す側断面の概略図である。FIG. 9B is a schematic side sectional view showing an inclination angle of the paddle according to the embodiment 1-2 of the present disclosure. 図１０は、本開示の実施の形態１－３の構造を示す側断面の概略図である。FIG. 10 is a schematic side sectional view showing the structure of the embodiment 1-3 of the present disclosure. 図１１は、本開示の実施の形態２－１の電動ポンプを示す側半断面の概略図である。FIG. 11 is a schematic side half cross-sectional view showing an electric pump according to Embodiment 2-1 of the present disclosure. 図１２は、同電動ポンプの斜視図である。FIG. 12 is a perspective view of the electric pump. 図１３は、同流量スイッチ取付部側断面の概略図である。FIG. 13 is a schematic view of a side cross section of the same flow rate switch mounting portion. 図１４は、同流量スイッチの分解斜視図である。FIG. 14 is an exploded perspective view of the same flow rate switch. 図１５は、同パドルの斜視図である。FIG. 15 is a perspective view of the paddle. 図１６は、同パドルおよびパドルケーシングの側断面図である。FIG. 16 is a side sectional view of the paddle and the paddle casing. 図１７は、同パドルケーシングの斜視図である。FIG. 17 is a perspective view of the paddle casing. 図１８は、同流量スイッチ取付部における水流発生時の側断面の概略図である。FIG. 18 is a schematic side cross-sectional view of the same flow rate switch mounting portion when a water flow is generated. 図１９は、本開示の実施の形態２－２のパドル斜視図である。FIG. 19 is a perspective view of the paddle according to the embodiment 2-2 of the present disclosure. 図２０は、同パドルケーシングの斜視図である。FIG. 20 is a perspective view of the paddle casing. 図２１は、同パドルおよびパドルケーシングの側断面図である。FIG. 21 is a side sectional view of the paddle and the paddle casing. 図２２は、従来の流量スイッチ付きポンプを示す概略図である。FIG. 22 is a schematic diagram showing a conventional pump with a flow rate switch.
　本開示の一態様に係る流量スイッチは、リードスイッチを有するベースと、ベースに固定されたパドルケーシングと、パドルケーシングに接続されたパドルと、リードスイッチを起動させるスイッチ起動部とを備える。パドルケーシングは、液体が流れるパドル流路を有する。パドルは、水受け部、パドル回転軸および保持部を含み、パドル回転軸を介してパドルケーシングに接続される。スイッチ起動部は保持部に保持される。水受け部は、パドル流路上に配置され、パドル流路を流れる液体の下流側に向かって凹むおわん形状を有する。 A flow switch according to an aspect of the present disclosure includes a base having a reed switch, a paddle casing fixed to the base, a paddle connected to the paddle casing, and a switch activator that activates the reed switch. The paddle casing has a paddle flow path through which liquid flows. The paddle includes a water receiving portion, a paddle rotating shaft, and a holding portion, and is connected to the paddle casing via the paddle rotating shaft. The switch starting unit is held by the holding unit. The water receiving portion is arranged on the paddle flow path and has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path.
　この構成によれば、平坦な形状のパドルと比較して、水流に対するパドルの水受け部の表面積を大きくすることができるため、水から受ける力を効率よくパドルを開く力に変換することができる。この結果、少流量でも流量スイッチが鋭敏に反応して起動するため、品質の良い流量スイッチを提供することができる。 According to this configuration, the surface area of the water receiving portion of the paddle with respect to the water flow can be increased as compared with the flat paddle, so that the force received from water can be efficiently converted into the force for opening the paddle. .. As a result, even if the flow rate is small, the flow rate switch reacts sharply and is activated, so that it is possible to provide a high-quality flow rate switch.
　また、水受け部は、第１傾斜部および第２傾斜部を有し、第１傾斜部は、第２傾斜部よりも先端側に位置している。そして、パドルが閉じた状態において、パドル流路を流れる液体の下流側に向かって第１傾斜部が傾斜する角度をθ１、パドル流路を流れる液体の下流側に向かって第２傾斜部が傾斜する角度をθ２、とすると、θ１＞θ２であるという構成にしてもよい。 Also, the water receiving portion has a first inclined portion and a second inclined portion, and the first inclined portion is located closer to the tip side than the second inclined portion. Then, when the paddle is closed, the angle at which the first inclined portion inclines toward the downstream side of the liquid flowing through the paddle channel is θ1, and the second inclined portion inclines toward the downstream side of the liquid flowing through the paddle channel. If the angle to be set is θ2, the configuration may be such that θ1>θ2.
　この構成によれば、水が多く流れる水受け部の先端側の表面積を大きくすることができるため、水受け部は水から効率的に力を受ける。このため、水から受ける力を水受け部の先端側に集め、効率よくパドルを開く力に変換することができ、より少流量でも流量スイッチが鋭敏に反応して起動することができる。 According to this configuration, the surface area of the tip end side of the water receiving part through which a large amount of water flows can be increased, so that the water receiving part receives power from the water efficiently. Therefore, the force received from water can be collected on the tip side of the water receiving portion and efficiently converted into the force for opening the paddle, and the flow rate switch can be sensitively activated even at a smaller flow rate.
　また、水受け部は底面に水受け縁部を有し、パドルが閉じた状態において、水受け縁部は、パドル流路の周囲である流路縁部に重なるという構成にしてもよい。 Also, the water receiving portion may have a water receiving edge portion on the bottom surface, and when the paddle is closed, the water receiving edge portion may overlap the flow passage edge portion that is the periphery of the paddle flow passage.
　この構成によれば、パドルが閉じた状態において、パドル流路から水受け部にほとんどすべての水流が当たるため、水受け部のほぼ全体で水流による力を受ける。このため、水受け部が水から受けた力をさらに効率よくパドルを開く力に変換することができる。 According to this configuration, almost all the water flow hits the water receiving part from the paddle flow path when the paddle is closed, so that almost the entire water receiving part receives the force of the water flow. Therefore, the force received by the water receiving portion from the water can be more efficiently converted into the force for opening the paddle.
　また、水受け部の先端側において、水受け縁部の内面と流路縁部の内面とが一致するという構成にしてもよい。 Alternatively, the inner surface of the water receiving edge and the inner surface of the flow path edge may be configured to coincide with each other on the tip side of the water receiving section.
　この構成よれば、パドル流路から水受け部にスムーズに水を導くことができるため、水受け部が水から受けた力をさらに効率よくパドルを開く力に変換することができる。 According to this configuration, water can be smoothly guided from the paddle flow path to the water receiving section, so that the force received from the water by the water receiving section can be more efficiently converted into the force for opening the paddle.
　また、パドルは、パドルが閉じたときにパドル流路の周囲における流路縁部と接触する突起を有するという構成にしてもよい。 Also, the paddle may be configured to have a protrusion that comes into contact with the flow path edge portion around the paddle flow path when the paddle is closed.
　この構成によれば、パドルが閉じたときに、パドルケーシングとパドルの接触面積が小さくなるので、パドルケーシングとパドルとの固着を抑制することができ、流量スイッチの誤動作を減少させるという効果を得られる。 According to this configuration, when the paddle is closed, the contact area between the paddle casing and the paddle becomes small, so that the paddle casing and the paddle can be prevented from sticking to each other, and the malfunction of the flow rate switch can be reduced. To be
　また、水受け部の底面における縁部を水受け縁部とすると、突起は、水受け縁部に設けられるという構成にしてもよい。 Also, when the edge on the bottom surface of the water receiving portion is the water receiving edge, the projection may be provided on the water receiving edge.
　この構成によれば、突起が水流の妨げになりにくい場所に設けられるため、より品質の良い流量スイッチを抵抗することができる。 According to this configuration, since the protrusion is provided in a place that does not easily obstruct the flow of water, it is possible to resist the flow switch of higher quality.
　また、突起は、パドル先端部における水受け縁部に設けられるという構成にしてもよい。 Also, the protrusion may be provided on the water receiving edge portion at the tip of the paddle.
　この構成によれば、突起が流路縁部と安定した位置で接触できるため、流路スイッチの誤動作を減少させることができる。 According to this configuration, since the protrusion can contact the edge of the flow path at a stable position, malfunction of the flow path switch can be reduced.
　また、突起は、流路縁部と接触するときに、パドル流路の直上には突出せず、流路縁部の直上に収まる大きさであるという構成にしてもよい。 Also, the protrusion may have a size such that it does not protrude directly above the paddle flow channel when it comes into contact with the flow channel edge, but is sized to fit directly above the flow channel edge.
　この構成によれば、突起が水流の妨げになりにくい場所に設けられているため、より品質の良い流量スイッチを得ることができる。 According to this configuration, since the protrusion is provided in a place where it does not easily obstruct the water flow, it is possible to obtain a flow switch with higher quality.
　また、パドルケーシングは、パドルが閉じたときに水受け部と接触する突起を有するという構成にしていてもよい。 Also, the paddle casing may be configured to have a protrusion that comes into contact with the water receiving portion when the paddle is closed.
　この構成によれば、パドルが閉じたときに、パドルケーシングとパドルの接触面積が小さくなる。そのため、パドルケーシングとパドルとの固着を抑制することができ、流量スイッチの誤作動を減少させるという効果が得られる。 According to this configuration, when the paddle is closed, the contact area between the paddle casing and the paddle becomes smaller. Therefore, it is possible to suppress the sticking of the paddle casing and the paddle, and it is possible to obtain the effect of reducing the malfunction of the flow rate switch.
　また、突起は、パドル流路の周囲における流路縁部に設けられるという構成にしてもよい。 Alternatively, the protrusion may be provided on the edge of the flow path around the paddle flow path.
　この構成によれば、突起が水流の妨げになりにくい場所にもうけられるため、より品質の良い流量スイッチを提供できる。 According to this configuration, the protrusion can be placed in a place that does not easily obstruct the flow of water, so that a better quality flow rate switch can be provided.
　また、突起は、パドル流路の直上には突出せず、流路縁部の直上に収まる大きさであるという構成にしてもよい。 Alternatively, the protrusion may be configured so that it does not protrude directly above the paddle flow passage but fits directly above the edge of the flow passage.
　この構成によれば、突起が水流の妨げになりにくい場所に設けられるため、より品質の良い流量スイッチを提供することができる。 According to this configuration, since the protrusion is provided at a place where it does not easily obstruct the water flow, it is possible to provide a flow switch of higher quality.
　また、水受け部の底面における縁部を水受け縁部とすると、突起は、パドルが閉じたときにパドル先端部における水受け縁部と接触するという構成にしてもよい。 Further, if the edge portion on the bottom surface of the water receiving portion is the water receiving edge portion, the projection may contact the water receiving edge portion at the tip of the paddle when the paddle is closed.
　この構成によれば、突起が水受け縁部と安定した位置で接触できるため、流量スイッチの誤作動を減少させることができる。 According to this configuration, since the protrusion can contact the water receiving edge at a stable position, malfunction of the flow rate switch can be reduced.
　また、本開示の一態様に係る電動ポンプは、上記流量スイッチを備える。 Further, an electric pump according to an aspect of the present disclosure includes the above flow rate switch.
　以下、本開示の実施の形態について図面を参照しながら説明する。実施の形態１は、少なくとも以下の実施の形態１－１、実施の形態１－２および実施の形態１－３を包含する。 Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Embodiment 1 includes at least Embodiment 1-1, Embodiment 1-2 and Embodiment 1-3 below.
　（実施の形態１－１）
　図１および図２に、本開示の実施の形態１－１の電動ポンプを示す。 (Embodiment 1-1)
1 and 2 show an electric pump according to Embodiment 1-1 of the present disclosure.
　図１および図２に示すように、電動ポンプ１はモータ２とポンプケーシング３を備えている。 As shown in FIGS. 1 and 2, the electric pump 1 includes a motor 2 and a pump casing 3.
　ポンプケーシング３は吸込口４および吐出口５を備えている。 The pump casing 3 has a suction port 4 and a discharge port 5.
　流量スイッチ６は、ポンプケーシング３の吐出口５側に取付けられている。 The flow rate switch 6 is attached to the discharge port 5 side of the pump casing 3.
　モータ２は回転軸１１を備えている。回転軸１１の一端の突出部分にインペラ７が固定される。インペラ７はポンプケーシング３に内包されるように配置される。 The motor 2 has a rotating shaft 11. The impeller 7 is fixed to the protruding portion at one end of the rotating shaft 11. The impeller 7 is arranged so as to be included in the pump casing 3.
　インペラ７が固定されている回転軸１１の一端とは反対側において、回転軸１１の他端の突出部分に冷却ファン１０を備えている。ファンカバー９は、モータ２に固定され、冷却ファン１０を覆う。 A cooling fan 10 is provided on the protruding portion of the other end of the rotating shaft 11 on the side opposite to the one end of the rotating shaft 11 to which the impeller 7 is fixed. The fan cover 9 is fixed to the motor 2 and covers the cooling fan 10.
　モータ２の頂部には端子カバー８が設けられている。端子カバー８はモータ２に固定されている。 A terminal cover 8 is provided on the top of the motor 2. The terminal cover 8 is fixed to the motor 2.
　モータ２の動力は回転軸１１を介してインペラ７に伝わり、インペラ７が回転する。インペラ７が回転することで、吸込口４から吸い込まれた水（液体）は吐出口５から吐き出される。 The power of the motor 2 is transmitted to the impeller 7 via the rotating shaft 11, and the impeller 7 rotates. The water (liquid) sucked from the suction port 4 is discharged from the discharge port 5 by the rotation of the impeller 7.
　図３に示すように、流量スイッチ６は、ベース１２、パドルケーシング１３、パドル１４、スイッチ起動部１８およびカバー１５で構成されている。 As shown in FIG. 3, the flow rate switch 6 is composed of a base 12, a paddle casing 13, a paddle 14, a switch activation unit 18 and a cover 15.
　ベース１２は基板１６を設けている。 The base 12 is provided with a substrate 16.
　基板１６は、リードスイッチ１７を備えており、リードスイッチ１７からの信号に基づいて電動ポンプ１をＯＮ／ＯＦＦする回路を有している。カバー１５はベース１２に固定される。 The substrate 16 is provided with a reed switch 17, and has a circuit for turning on/off the electric pump 1 based on a signal from the reed switch 17. The cover 15 is fixed to the base 12.
　パドルケーシング１３はベース１２に固定される。 The paddle casing 13 is fixed to the base 12.
　図４に示すように、パドル１４は水受け部１９、パドル回転軸２０、保持部２１およびスプリング３０を備えている。 As shown in FIG. 4, the paddle 14 includes a water receiving portion 19, a paddle rotating shaft 20, a holding portion 21, and a spring 30.
　スイッチ起動部１８は、例えばマグネットなどであり、保持部２１に固定される。 The switch activation unit 18 is, for example, a magnet, and is fixed to the holding unit 21.
　水受け部１９の底面には水受け縁部２２が設けられている。つまり、水受け部１９の底面は開口部となっており、開口部には水受け縁部２２が設けられている。 A water receiving edge portion 22 is provided on the bottom surface of the water receiving portion 19. That is, the bottom surface of the water receiving portion 19 is an opening, and the water receiving edge portion 22 is provided in the opening.
　パドル１４は、パドル回転軸２０を介してパドルケーシング１３に接続される。 The paddle 14 is connected to the paddle casing 13 via the paddle rotation shaft 20.
　図５に示すように、パドルケーシング１３は、液体が流れるパドル流路２６を有している。パドル流路２６の周囲には流路縁部２７が設けられる。なお、パドルケーシング１３には、パドル回転軸２０を挿入する挿入口２８が設けられている。本実施の形態では、パドル１４は、パドル回転軸２０を挿入口２８に挿入することでパドルケーシング１３に保持されているが、これに限定されない。例えば、パドルケーシング１３の内側に突出するよう保持部を設け、パドル回転軸２０を保持してもよい。 As shown in FIG. 5, the paddle casing 13 has a paddle flow path 26 through which liquid flows. A flow path edge portion 27 is provided around the paddle flow path 26. The paddle casing 13 is provided with an insertion opening 28 into which the paddle rotation shaft 20 is inserted. In the present embodiment, the paddle 14 is held by the paddle casing 13 by inserting the paddle rotation shaft 20 into the insertion port 28, but the present invention is not limited to this. For example, a holding portion may be provided so as to project inside the paddle casing 13 to hold the paddle rotation shaft 20.
　パドル１４がパドルケーシング１３に接続された状態において、パドル１４の水受け部１９は、パドルケーシング１３のパドル流路２６上に配置される。水受け部１９は、パドル流路２６を流れる液体の下流側に向かって凹むおわん形状を有している。ここで、図６における上を下流側、下を上流側とする。 The water receiving portion 19 of the paddle 14 is arranged on the paddle flow path 26 of the paddle casing 13 in a state where the paddle 14 is connected to the paddle casing 13. The water receiving portion 19 has a bowl shape which is recessed toward the downstream side of the liquid flowing through the paddle flow path 26. Here, the upper side in FIG. 6 is the downstream side and the lower side is the upstream side.
　電動ポンプ１が起動していない場合であっても、例えば水道の蛇口などを開くことで、パドル流路２６と繋がる水道管の水圧を緩和することより、図６に示す水流２３が生じる。 Even when the electric pump 1 is not activated, the water flow 23 shown in FIG. 6 is generated by relaxing the water pressure of the water pipe connected to the paddle flow path 26 by opening the tap of the water supply, for example.
　図６に示すように、水受け部１９が水流２３による力を受けると、パドル１４はパドル回転軸２０を中心として開く方向（下流側）に回転する。そして、スイッチ起動部１８がリードスイッチ１７に近づくことでリードスイッチ１７が起動する。リードスイッチ１７の起動信号は基板１６を介してモータ２に伝達され、モータ２が起動する。モータ２が起動するとモータ２の動力は回転軸１１を介してインペラ７に伝わり、インペラ７が回転する。このようなステップで電動ポンプ１が起動して、水流２３を増加することができる。 As shown in FIG. 6, when the water receiving portion 19 receives a force from the water flow 23, the paddle 14 rotates about the paddle rotation shaft 20 in the opening direction (downstream side). The reed switch 17 is activated when the switch activation unit 18 approaches the reed switch 17. The activation signal of the reed switch 17 is transmitted to the motor 2 via the board 16 and the motor 2 is activated. When the motor 2 is started, the power of the motor 2 is transmitted to the impeller 7 via the rotating shaft 11, and the impeller 7 rotates. The electric pump 1 is activated by such steps, and the water flow 23 can be increased.
　パドル１４はスプリング３０により常に閉じる方向（上流側）に力が付与されている。そのため水道の蛇口などを閉じることで、水流２３が減少し、パドル１４はパドル回転軸２０を中心として閉じる方向に回転する。そして、スイッチ起動部１８がリードスイッチ１７から遠ざかることでリードスイッチ１７が停止し、電動ポンプ１は停止する。 The paddle 14 is always given a force in the closing direction (upstream side) by the spring 30. Therefore, by closing the faucet of the water supply, the water flow 23 decreases, and the paddle 14 rotates in the closing direction around the paddle rotation shaft 20. Then, the switch activation unit 18 moves away from the reed switch 17, the reed switch 17 stops, and the electric pump 1 stops.
　図７Ａに本実施の形態である水受け部１９がおわん形状のパドル１４、図７Ｂに水受け部２９がフラット形状のフラットパドル２４を示す。 FIG. 7A shows a paddle 14 in which the water receiving portion 19 according to the present embodiment is bowl-shaped, and FIG. 7B shows a flat paddle 24 in which the water receiving portion 29 is flat.
　フラットパドル２４の水受け部２９がフラット形状であるのに対し、パドル１４の水受け部１９は、下流側に向かって凹むおわん形状となっている。そのため、パドル１４の方が、水流２３に対する水受け部１９の表面積大きい。このため、水流２３から受ける力を効率よくパドル１４を開く力に変換することができる。 The water receiving portion 29 of the flat paddle 24 has a flat shape, whereas the water receiving portion 19 of the paddle 14 has a bowl shape which is recessed toward the downstream side. Therefore, the paddle 14 has a larger surface area of the water receiving portion 19 with respect to the water flow 23. Therefore, the force received from the water stream 23 can be efficiently converted into the force for opening the paddle 14.
　この構成によれば、電動ポンプ１が停止している状態において、パドル流路２６に流れる流量が少ない場合であっても、流量スイッチ６が鋭敏に反応し起動できるため、品質の良い流量スイッチ６および電動ポンプ１を提供することができる。 According to this configuration, when the electric pump 1 is stopped, the flow rate switch 6 can be sensitively activated and activated even when the flow rate flowing through the paddle flow path 26 is small. And the electric pump 1 can be provided.
　なお、図８に本実施の形態の流量スイッチ６の分解斜視図を示しておく。 Incidentally, FIG. 8 shows an exploded perspective view of the flow rate switch 6 of the present embodiment.
　（実施の形態１－２）
　図９Ａ、図９Ｂにおいて、実施の形態１－１と同様の構成要素については同一の符号を付し、その詳細な説明は省略する。図９Ａ、図９Ｂは、本開示の実施の形態１－２のパドルの傾斜角度を示す即断面の概略図である。なお、図９Ｂは、図９Ａの二点鎖線で囲んだ部分Ａの拡大図である。 (Embodiment 1-2)
9A and 9B, the same components as those in Embodiment 1-1 are designated by the same reference numerals, and detailed description thereof will be omitted. 9A and 9B are schematic views of immediate cross sections showing the tilt angles of the paddles according to Embodiment 1-2 of the present disclosure. Note that FIG. 9B is an enlarged view of a portion A surrounded by a chain double-dashed line in FIG. 9A.
　図９Ａ、図９Ｂに示すように、パドル１４Ａの水受け部１９Ａは第１傾斜部１９ａおよび第２傾斜部１９ｂを有している。水受け部１９Ａの第１傾斜部１９ａは第２傾斜部１９ｂよりもパドル１４Ａの先端側に位置する。 As shown in FIGS. 9A and 9B, the water receiving portion 19A of the paddle 14A has a first inclined portion 19a and a second inclined portion 19b. The first inclined portion 19a of the water receiving portion 19A is located closer to the tip end side of the paddle 14A than the second inclined portion 19b.
　パドル１４Ａが閉じた状態において、パドルケーシング１３のパドル流路２６を流れる液体（水流２３）の下流側に向かって第１傾斜部１９ａが傾斜する角度をθ１、パドル流路２６を流れる液体の下流側に向かって第２傾斜部１９ｂが傾斜する角度をθ２とすると、θ１＞θ２であることが好ましい。 With the paddle 14A closed, the angle at which the first inclined portion 19a inclines toward the downstream side of the liquid (water flow 23) flowing through the paddle flow passage 26 of the paddle casing 13 is θ1, and the downstream of the liquid flowing through the paddle flow passage 26 is When the angle at which the second inclined portion 19b inclines toward the side is θ2, it is preferable that θ1>θ2.
　上記構成において、水受け部１９Ａの先端側に位置する第１傾斜部１９ａに多くの水流２３が流れる形状であるため、水受け部１９は水流２３から効率的に力を受けることになる。 In the above configuration, since a large amount of water stream 23 flows through the first inclined portion 19a located on the tip side of the water receiving portion 19A, the water receiving portion 19 efficiently receives force from the water stream 23.
　また、パドル回転軸２０から遠い側である第１傾斜部１９ａが傾斜する角度θ１を大きくすることで、水受け部１９が水流２３から受ける力を効率的にパドル１４Ａが回転する力に変換することができる。 Further, by increasing the angle θ1 at which the first inclined portion 19a that is far from the paddle rotation shaft 20 is inclined, the force received by the water receiving portion 19 from the water flow 23 is efficiently converted into the force for rotating the paddle 14A. be able to.
　このように、水流２３から受ける力を水受け部１９Ａの先端側に集め、効率よくパドル１４Ａを開く力に変換することができるため、より少流量で流量スイッチ６が鋭敏に反応し起動する。これより、品質の良い流量スイッチ６および電動ポンプ１を提供することができる。 In this way, the force received from the water flow 23 can be collected at the tip side of the water receiving portion 19A and can be efficiently converted into the force that opens the paddle 14A, so that the flow rate switch 6 reacts sharply with a smaller flow rate and is activated. As a result, the flow rate switch 6 and the electric pump 1 having good quality can be provided.
　（実施の形態１－３）
　図１０において、実施の形態１－１および１－２と同様の構成要素については同一の符号を付し、その詳細な説明は省略する。 (Embodiment 1-3)
10, components similar to those in Embodiments 1-1 and 1-2 are designated by the same reference numerals, and detailed description thereof will be omitted.
　図１０に示すように、パドル１４Ｂが閉じた状態において、水受け部１９Ｂの水受け縁部２２は、パドル流路２６の周囲である流路縁部２７に重なることが好ましい。 As shown in FIG. 10, when the paddle 14B is closed, the water receiving edge portion 22 of the water receiving portion 19B preferably overlaps the flow passage edge portion 27 which is the periphery of the paddle flow passage 26.
　この構成により、パドル１４Ｂが閉じた状態において、水受け部１９Ｂに対してほとんどすべての水流２３が当たるため、水流２３から効率的に力を受ける。 With this configuration, when the paddle 14B is closed, almost all the water flow 23 hits the water receiving portion 19B, so that the water flow 23 efficiently receives force.
　この結果、水受け部１９Ｂのほぼ全体で水流２３から力を受け、さらに効率よくパドル１４を開く力に変換することができ、より少流量でも流量スイッチ６が鋭敏に反応して起動することができる。 As a result, almost the entire water receiving portion 19B receives a force from the water flow 23, and it can be more efficiently converted into a force for opening the paddle 14, and the flow rate switch 6 can be sensitively activated even at a smaller flow rate. it can.
　また、図１０に示すように、水受け部１９Ｂの底面に設けられた水受け縁部２２の内面２２ａと、パドル流路２６の流路縁部２７の内面２７ａとが、一致するという構成にすることが好ましい。 In addition, as shown in FIG. 10, the inner surface 22a of the water receiving edge portion 22 provided on the bottom surface of the water receiving portion 19B and the inner surface 27a of the flow channel edge portion 27 of the paddle flow channel 26 have the same configuration. Preferably.
　この構成により、パドル流路２６から水受け部１９Ｂにスムーズに水を導くことができるため、水受け部１９Ｂが水から受けた力をさらに効率よくパドル１４を開く力に変換することができる。 With this configuration, water can be smoothly guided from the paddle flow path 26 to the water receiving portion 19B, so that the force received by the water receiving portion 19B from the water can be more efficiently converted into the force for opening the paddle 14.
　（実施の形態２）
　次に、実施の形態２に係る流量スイッチおよび電動ポンプに関して説明する。 (Embodiment 2)
Next, the flow rate switch and the electric pump according to the second embodiment will be described.
　従来の流量スイッチにおいては、水流がなくパドルが閉じているときに、パドルと流路壁面が面で接触するおそれがある。そして、その面での接触状態が続くと、パドルが流路壁面に固着し、パドルが開閉しづらくなるという課題を有している。 In the conventional flow rate switch, there is a risk that the paddle will come into surface contact with the wall surface of the flow path when the paddle is closed without water flow. Then, if the contact state on that surface continues, the paddle sticks to the wall surface of the flow path, which makes it difficult to open and close the paddle.
　そこで実施の形態２では、上記従来の課題を解決するものであり、パドルの固着を抑制する流量スイッチを提供することを目的とする。 Therefore, the second embodiment is to solve the above-described conventional problems, and an object thereof is to provide a flow rate switch that suppresses sticking of the paddle.
　実施の形態２における流量スイッチによれば、パドルケーシングまたはパドルが突起を有するため、パドルが閉じた時に、パドルケーシングとパドルの接触面積が小さくなる。これにより、パドルケーシングとパドルとの固着を抑制することができ、流量スイッチの誤動作を減少させるという効果を得ることができる。 According to the flow rate switch in the second embodiment, since the paddle casing or the paddle has the protrusion, the contact area between the paddle casing and the paddle becomes small when the paddle is closed. As a result, it is possible to prevent the paddle casing and the paddle from sticking to each other and reduce the malfunction of the flow rate switch.
　また、実施の形態２における電動ポンプは、上記流量スイッチを備えているため、誤動作が少ない。 Also, since the electric pump according to the second embodiment is equipped with the above-mentioned flow rate switch, there are few malfunctions.
　以下、本開示の実施の形態２について図面を参照しながら説明する。実施の形態２は、少なくとも以下の実施の形態２－１および実施の形態２－２を包含する。 Hereinafter, the second embodiment of the present disclosure will be described with reference to the drawings. The second embodiment includes at least the following second embodiment 2-1 and second embodiment 2-2.
　（実施の形態２－１）
　図１１および図１２に示すように、電動ポンプ１０１はモータ１０２とポンプケーシング１０３を備えている。 (Embodiment 2-1)
As shown in FIGS. 11 and 12, the electric pump 101 includes a motor 102 and a pump casing 103.
　ポンプケーシング１０３は吸込口１０４および吐出口１０５を備えている。 The pump casing 103 has a suction port 104 and a discharge port 105.
　流量スイッチ１０６は、ポンプケーシング１０３の吐出口１０５側に取付けられている。 The flow rate switch 106 is attached to the discharge port 105 side of the pump casing 103.
　モータ１０２は回転軸１１１を備えている。回転軸１１１の一端の突出部分にインペラ１０７が固定される。インペラ１０７はポンプケーシング１０３に内包されるように配置される。 The motor 102 has a rotating shaft 111. The impeller 107 is fixed to the protruding portion at one end of the rotating shaft 111. The impeller 107 is arranged so as to be included in the pump casing 103.
　インペラ１０７が固定されている回転軸１１１の一端とは反対側において、回転軸１１１の他端の突出部分に冷却ファン１１０を備えている。ファンカバー１０９は、モータ１０２に固定され、冷却ファン１１０を覆う。 A cooling fan 110 is provided on the protruding portion at the other end of the rotating shaft 111, on the side opposite to the one end of the rotating shaft 111 to which the impeller 107 is fixed. The fan cover 109 is fixed to the motor 102 and covers the cooling fan 110.
　モータ１０２の頂部には端子カバー１０８が設けられている。端子カバー１０８はモータ１０２に固定されている。 A terminal cover 108 is provided on the top of the motor 102. The terminal cover 108 is fixed to the motor 102.
　モータ１０２の動力は回転軸１１１を介してインペラ１０７に伝わり、インペラ１０７が回転する。インペラ１０７が回転することで、吸込口１０４から吸い込まれた水（液体）は吐出口１０５から吐き出される。 The power of the motor 102 is transmitted to the impeller 107 via the rotating shaft 111, and the impeller 107 rotates. The water (liquid) sucked from the suction port 104 is discharged from the discharge port 105 as the impeller 107 rotates.
　図１３および図１４に示すように、流量スイッチ１０６は、ベース１１５、パドルケーシング１１６、パドル１１７、スイッチ起動部１２１およびカバー１１８で構成されている。 As shown in FIGS. 13 and 14, the flow rate switch 106 includes a base 115, a paddle casing 116, a paddle 117, a switch activation unit 121, and a cover 118.
　ベース１１５は基板１１９を設けている。 The base 115 is provided with a substrate 119.
　基板１１９は、リードスイッチ１２０を備えており、リードスイッチ１２０からの信号に基づいて電動ポンプ１０１をＯＮ／ＯＦＦする回路を有している。カバー１１８はベース１１５に固定される。 The board 119 includes a reed switch 120, and has a circuit for turning on/off the electric pump 101 based on a signal from the reed switch 120. The cover 118 is fixed to the base 115.
　パドルケーシング１１６はベース１１５に固定される。 The paddle casing 116 is fixed to the base 115.
　図１５に示すように、パドル１１７は、水受け部１３０、パドル回転軸１３１、保持部１３２およびスプリング１３４を備えている。 As shown in FIG. 15, the paddle 117 includes a water receiving portion 130, a paddle rotating shaft 131, a holding portion 132, and a spring 134.
　水受け部１３０の底面には水受け縁部１３３が設けられている。つまり、水受け部１３０の底面は開口部となっており、開口部には水受け縁部１３３が設けられている。水受け部１３０の先端部はパドル先端部１３９である。 A water receiving edge portion 133 is provided on the bottom surface of the water receiving portion 130. That is, the bottom surface of the water receiving portion 130 is an opening, and the water receiving edge portion 133 is provided in the opening. The tip of the water receiving portion 130 is a paddle tip 139.
　パドル１１７は、パドル回転軸１３１を介してパドルケーシング１１６に接続される。 The paddle 117 is connected to the paddle casing 116 via the paddle rotation shaft 131.
　図１６に示すように、スイッチ起動部１２１は、マグネット１３５などがあり、保持部１３２に固定される。 As shown in FIG. 16, the switch activation unit 121 includes a magnet 135 and the like and is fixed to the holding unit 132.
　図１７に示すように、パドルケーシング１１６は、液体が流れるパドル流路１３６と流路縁部１３８を有している。なお、パドルケーシング１１６には、パドル回転軸１３１を挿入する挿入口１３７が設けられている。 As shown in FIG. 17, the paddle casing 116 has a paddle channel 136 and a channel edge portion 138 through which the liquid flows. The paddle casing 116 is provided with an insertion opening 137 into which the paddle rotation shaft 131 is inserted.
　パドル１１７がパドルケーシング１１６に接続された状態において、パドル１１７の水受け部１３０は、パドルケーシング１１６のパドル流路１３６上に配置される。流路縁部１３８は突起１２２を有する。突起１２２はパドル１１７が閉まるときに、水受け縁部１３３と接触することによって、水受け縁部１３３と流路縁部１３８の接触する面積を低減する。 In the state where the paddle 117 is connected to the paddle casing 116, the water receiving portion 130 of the paddle 117 is arranged on the paddle flow path 136 of the paddle casing 116. The flow path edge 138 has a protrusion 122. The projection 122 contacts the water receiving edge portion 133 when the paddle 117 is closed, thereby reducing the contact area between the water receiving edge portion 133 and the flow path edge portion 138.
　上記の構成において、パドルケーシング１１６とパドル１１７の接触面積が小さくなるので、パドル１１７がパドルケーシング１１６に固着することを抑制することができる。このため、流量スイッチ１０６の誤動作を減少させることができ、より品質の良い電動ポンプ１０１を提供することができる。 In the above configuration, since the contact area between the paddle casing 116 and the paddle 117 is small, it is possible to suppress the paddle 117 from sticking to the paddle casing 116. Therefore, malfunction of the flow rate switch 106 can be reduced, and a higher quality electric pump 101 can be provided.
　電動ポンプ１０１が起動していない場合であっても、例えば水道の蛇口などを開くことで、パドル流路１３６と繋がる水道管の水圧を緩和することより、図１８に示す水流１４０を生じることができる。 Even when the electric pump 101 is not activated, the water flow 140 shown in FIG. 18 may be generated by relaxing the water pressure of the water pipe connected to the paddle flow path 136 by opening the tap of the water supply, for example. it can.
　図１８に示すように、水受け部１３０が水流１４０による力を受けると、パドル１１７はパドル回転軸１３１を中心として開く方向に回転する。そして、スイッチ起動部１２１がリードスイッチ１２０に近づくことでリードスイッチ１２０が起動する。リードスイッチ１２０の起動信号は基板１１９を介してモータ１０２に伝達され、モータ１０２が起動する。モータ１０２が起動するとモータ１０２の動力は回転軸１１１を介してインペラ１０７に伝わり、インペラ１０７が回転する。このようなステップで電動ポンプ１０１が起動して、水流１４０を増加することができる。 As shown in FIG. 18, when the water receiving portion 130 receives a force from the water flow 140, the paddle 117 rotates about the paddle rotation shaft 131 in the opening direction. Then, the reed switch 120 is activated when the switch activation unit 121 approaches the reed switch 120. The activation signal of the reed switch 120 is transmitted to the motor 102 via the board 119, and the motor 102 is activated. When the motor 102 is activated, the power of the motor 102 is transmitted to the impeller 107 via the rotating shaft 111, and the impeller 107 rotates. The electric pump 101 is activated in such steps, and the water flow 140 can be increased.
　パドル１１７はスプリング１３４により常に閉じる方向に力が付与されている。そのため水道の蛇口などを閉じることで、水流１４０が減少し、パドル１１７はパドル回転軸１３１を中心として閉じる方向に回転する。そして、スイッチ起動部１２１がリードスイッチ１２０から遠ざかることでリードスイッチ１２０が停止し、電動ポンプ１０１は停止する。 A force is always applied to the paddle 117 by the spring 134 in the closing direction. Therefore, by closing the faucet of the water supply, the water flow 140 is reduced, and the paddle 117 rotates in the closing direction around the paddle rotation shaft 131. Then, when the switch activator 121 moves away from the reed switch 120, the reed switch 120 stops and the electric pump 101 stops.
　以下、本実施の形態について補足する。 The following is a supplement to this embodiment.
　図１７において、突起１２２は流路縁部１３８に設けられ、パドル流路１３６の直上には突出せず、流路縁部１３８の直上に収まる大きさであることが好ましい。 In FIG. 17, it is preferable that the protrusion 122 is provided on the flow path edge portion 138, does not project directly above the paddle flow path 136, and has a size that fits directly above the flow path edge portion 138.
　この構成によれば、突起１２２が液体の流路上に存在することを回避することができる。この結果、突起１２２は電動ポンプ１０１が作り出す水流１４０の妨げになりにくくすることができるため、より品質の良い電動ポンプ１０１を提供することができる。 According to this configuration, it is possible to prevent the protrusion 122 from existing on the liquid flow path. As a result, the protrusions 122 can be less likely to obstruct the water flow 140 created by the electric pump 101, so that the electric pump 101 of higher quality can be provided.
　また、突起１２２はパドル１１７が閉じた時にパドル先端部１３９における水受け縁部１３３と接触することが好ましい。 Further, it is preferable that the projection 122 comes into contact with the water receiving edge portion 133 of the paddle tip portion 139 when the paddle 117 is closed.
　この構成によれば、突起１２２は水受け縁部１３３と安定した位置で接触できるため、流量スイッチ１０６の誤動作を減少することができる。 According to this configuration, since the protrusion 122 can contact the water receiving edge portion 133 at a stable position, malfunction of the flow rate switch 106 can be reduced.
　また、突起１２２はパドル１１７が閉まるときに、水受け縁部１３３と接触するものであればよいため、流路縁部１３８以外の部分（例えば流路縁部１３８上方の内壁１４１など）に設けられてもよい。 Further, since the projection 122 may be anything that comes into contact with the water receiving edge portion 133 when the paddle 117 is closed, it is provided on a portion other than the flow passage edge portion 138 (for example, the inner wall 141 above the flow passage edge portion 138). May be
　（実施の形態２－２）
　図１９、図２０、図２１において、実施の形態２－１同様の構成要素については同一の符号を付し、その詳細な説明は省略する。 (Embodiment 2-2)
19, 20, and 21, the same components as those in Embodiment 2-1 are designated by the same reference numerals, and detailed description thereof will be omitted.
　図１９に示すように、パドル１１７Ａの水受け部１３０の水受け縁部１３３に突起１４２に設けてもよい。突起１４２はパドル１１７Ａが閉まるときに、流路縁部１３８と接触することによって、水受け縁部１３３と流路縁部１３８の接触する面積を抑制する。 As shown in FIG. 19, the projection 142 may be provided on the water receiving edge portion 133 of the water receiving portion 130 of the paddle 117A. When the paddle 117A is closed, the projection 142 comes into contact with the flow path edge 138, thereby suppressing the contact area between the water receiving edge 133 and the flow path edge 138.
　図２０に示すように、本実施の形態では、パドルケーシング１１６Ａには突起１２２を設けていない。 As shown in FIG. 20, in the present embodiment, the paddle casing 116A is not provided with the protrusion 122.
　図２１に、本実施の形態のパドル１１７Ａおよびパドルケーシング１１６Ａの側断面図を示しておく。 FIG. 21 shows a side sectional view of the paddle 117A and the paddle casing 116A of the present embodiment.
　上記の構成において、パドルケーシング１１６Ａとパドル１１７Ａの接触面積が小さくなるので、パドル１１７Ａがパドルケーシング１１６Ａに固着することを抑制することができる。このため、流量スイッチ１０６の誤動作を減少させることができ、より品質の良い電動ポンプ１０１を提供することができる。 In the above configuration, since the contact area between the paddle casing 116A and the paddle 117A is small, it is possible to suppress the paddle 117A from sticking to the paddle casing 116A. Therefore, malfunction of the flow rate switch 106 can be reduced, and a higher quality electric pump 101 can be provided.
　以下、本実施の形態について補足する。 The following is a supplement to this embodiment.
　突起１４２は水受け縁部１３３に設けられ、流路縁部１３８と接触するときに、パドル流路１３６の直上には突出せず、流路縁部１３８の直上に収まる大きさであることが好ましい。 The projection 142 is provided on the water receiving edge portion 133, and when contacting with the flow path edge portion 138, the projection 142 does not project directly above the paddle flow path 136 but has a size that can be accommodated directly above the flow path edge portion 138. preferable.
　この構成によれば、突起１４２が液体の流路上に存在することを回避することができる。この結果、突起１４２は電動ポンプ１０１が作り出す水流１４０の妨げになりにくくすることができるため、より品質の良い電動ポンプ１０１を提供することができる。 According to this configuration, it is possible to prevent the protrusion 142 from existing on the liquid flow path. As a result, the protrusion 142 can be less likely to obstruct the water flow 140 created by the electric pump 101, and thus the electric pump 101 of higher quality can be provided.
　突起１４２はパドル先端部１３９における水受け縁部１３３に設けられることが好ましい。 The protrusion 142 is preferably provided on the water receiving edge 133 of the paddle tip 139.
　この構成によれば、突起１４２は流路縁部１３８と安定した位置で接触できるため、流量スイッチ１０６の誤動作を減少することができる。 According to this configuration, since the protrusion 142 can contact the flow path edge 138 at a stable position, malfunction of the flow rate switch 106 can be reduced.
　以上、本開示に係る流量スイッチまたは電動ポンプについて、実施の形態に基づいて説明したが、本開示は、実施の形態に限定されるものではない。本開示の趣旨を逸脱しない限り、当業者が思いつく各種変形を本実施の形態に施したものや、異なる実施の形態における構成要素を組み合わせて構築される形態も、本開示の範囲内に含まれる。 The flow switch or the electric pump according to the present disclosure has been described above based on the embodiment, but the present disclosure is not limited to the embodiment. As long as it does not depart from the gist of the present disclosure, various modifications that can be conceived by those skilled in the art are made to the present embodiment, and forms constructed by combining components in different embodiments are also included in the scope of the present disclosure. ..
　本開示に係る流量スイッチまたは電動ポンプは、少流量でもパドルの開閉が可能となることで、少流量でも鋭敏に反応して起動することができる流量スイッチまたは電動ポンプ等として有効である。また、本開示に係る流量スイッチまたは電動ポンプは、パドルとパドルケーシングとの固着を抑制することが可能であるので、パドル開閉の機構を利用する流量スイッチまたは電動ポンプ等として有用である。 The flow rate switch or the electric pump according to the present disclosure is effective as a flow rate switch or an electric pump or the like that can be activated by reacting sensitively even with a small flow rate because the paddle can be opened and closed even with a small flow rate. Further, the flow rate switch or the electric pump according to the present disclosure can suppress the sticking of the paddle and the paddle casing, and thus is useful as a flow rate switch or an electric pump or the like that uses a paddle opening/closing mechanism.
　１、１０１　　電動ポンプ
　２、１０２　　モータ
　３、１０３、２０３　　ポンプケーシング
　４、１０４　　吸込口
　５、１０５、２０５　　吐出口
　６、１０６、２０４　　流量スイッチ
　７、１０７　　インペラ
　８、１０８　　端子カバー
　９、１０９　　ファンカバー
　１０、１１０　　冷却ファン
　１１、１１１　　回転軸
　１２、１１５　　ベース
　１３、１１６、１１６Ａ　　パドルケーシング
　１４、１４Ａ、１４Ｂ、１１７、１１７Ａ、２０６　　パドル
　１５、１１８　　カバー
　１６、１１９　　基板
　１７、１２０、２０８　　リードスイッチ
　１８、１２１　　スイッチ起動部
　１９、１９Ａ、１９Ｂ、１３０　　水受け部
　１９ａ　　第１傾斜部
　１９ｂ　　第２傾斜部
　２０、１３１　　パドル回転軸
　２１、１３２　　保持部
　２２、１３３　　水受け縁部
　２２ａ　　内面
　２３、１４０　　水流
　２４　　フラットパドル
　２６、１３６　　パドル流路
　２７、１３８　　流路縁部
　２７ａ　　内面
　２８、１３７　　挿入口
　２９　　水受け部
　３０、１３４　　スプリング
　θ１　　角度
　θ２　　角度
　１２２、１４２　　突起
　１３５、２０７　　マグネット
　１３９　　パドル先端部
　１４１　　内壁 1, 101 Electric pump 2, 102 Motor 3, 103, 203 Pump casing 4, 104 Suction port 5, 105, 205 Discharge port 6, 106, 204 Flow rate switch 7, 107 Impeller 8, 108 Terminal cover 9, 109 Fan cover 10 , 110 cooling fan 11, 111 rotating shaft 12, 115 base 13, 116, 116A paddle casing 14, 14A, 14B, 117, 117A, 206 paddle 15, 118 cover 16, 119 substrate 17, 120, 208 reed switch 18, 121 Switch activation part 19, 19A, 19B, 130 Water receiving part 19a 1st inclined part 19b 2nd inclined part 20, 131 Paddle rotating shaft 21, 132 Holding part 22, 133 Water receiving edge part 22a Inner surface 23, 140 Water flow 24 Flat paddle 26, 136 paddle flow path 27, 138 flow path edge portion 27a inner surface 28, 137 insertion port 29 water receiving portion 30, 134 spring θ1 angle θ2 angle 122, 142 protrusion 135, 207 magnet 139 paddle tip portion 141 inner wall

Claims (13)

  1. 　リードスイッチを有するベースと、
    　前記ベースに固定されたパドルケーシングと、
    　前記パドルケーシングに接続されたパドルと、
    　前記リードスイッチを起動させるスイッチ起動部と、を備え、
    　前記パドルケーシングは、液体が流れるパドル流路を有し、
    　前記パドルは、水受け部、パドル回転軸および保持部を含み、前記パドル回転軸を介して前記パドルケーシングに接続され、
    　前記スイッチ起動部は前記保持部に保持され、
    　前記水受け部は、前記パドル流路上に配置され、前記パドル流路を流れる前記液体の下流側に向かって凹むおわん形状を有することを特徴とする流量スイッチ。     A base having a reed switch,
    A paddle casing fixed to the base,
    A paddle connected to the paddle casing,
    A switch activation unit for activating the reed switch,
    The paddle casing has a paddle flow path through which liquid flows,
    The paddle includes a water receiving portion, a paddle rotation shaft, and a holding portion, and is connected to the paddle casing via the paddle rotation shaft,
    The switch starting unit is held by the holding unit,
    The water receiving part is arranged on the paddle flow path and has a bowl shape which is recessed toward a downstream side of the liquid flowing through the paddle flow path.
  2. 　前記水受け部は、第１傾斜部および第２傾斜部を有し、
    　前記第１傾斜部は、前記第２傾斜部よりも先端側に位置し、
    　前記パドルが閉じた状態において、前記パドル流路を流れる前記液体の前記下流側に向かって前記第１傾斜部が傾斜する角度をθ１、前記パドル流路を流れる前記液体の前記下流側に向かって前記第２傾斜部が傾斜する角度をθ２、とすると、
    θ１＞θ２であることを特徴とする請求項１に記載の流量スイッチ。     The water receiving portion has a first inclined portion and a second inclined portion,
    The first inclined portion is located closer to the tip side than the second inclined portion,
    In the state where the paddle is closed, the angle at which the first inclined portion is inclined toward the downstream side of the liquid flowing through the paddle flow path is θ1, and the angle is toward the downstream side of the liquid flowing through the paddle flow path. If the angle of inclination of the second inclined portion is θ2,
    The flow switch according to claim 1, wherein θ1>θ2.
  3. 　前記水受け部は底面に水受け縁部を有し、
    　前記パドルが閉じた状態において、前記水受け縁部は、前記パドル流路の周囲である流路縁部に重なることを特徴とする請求項１または２に記載の流量スイッチ。     The water receiving portion has a water receiving edge portion on the bottom surface,
    3. The flow rate switch according to claim 1, wherein the water receiving edge portion overlaps a flow path edge portion that is the periphery of the paddle flow path when the paddle is closed.
  4. 　前記水受け部の先端側において、前記水受け縁部の内面と前記流路縁部の内面とが一致することを特徴とする請求項３に記載の流量スイッチ。 The flow switch according to claim 3, wherein an inner surface of the water receiving edge portion and an inner surface of the flow channel edge portion are aligned with each other on a tip side of the water receiving portion.
  5. 　前記パドルは、前記パドルが閉じたときに前記パドル流路の周囲における流路縁部と接触する突起を有することを特徴とする請求項１に記載の流量スイッチ。 The flow switch according to claim 1, wherein the paddle has a protrusion that comes into contact with a flow path edge portion around the paddle flow path when the paddle is closed.
  6. 　前記水受け部の底面における縁部を水受け縁部とすると、
    　前記突起は、前記水受け部縁部に設けられることを特徴とする請求項５に記載の流量スイッチ。     When the edge portion on the bottom surface of the water receiving portion is a water receiving edge portion,
    The flow switch according to claim 5, wherein the protrusion is provided on an edge portion of the water receiving portion.
  7. 　前記突起は、パドル先端部における前記水受け縁部に設けられることを特徴とする請求項６に記載の流量スイッチ。 The flow switch according to claim 6, wherein the protrusion is provided on the water receiving edge portion at the tip of the paddle.
  8. 　前記突起は、前記流路縁部と接触するときに、前記パドル流路の直上には突出せず、前記流路縁部の直上に収まる大きさであることを特徴とする請求項５～７の何れか一項に記載の流量スイッチ。 The projections are of a size that does not project directly above the paddle flow path when they come into contact with the flow path edge portion, but are located just above the flow path edge portion. The flow switch according to any one of 1.
  9. 　前記パドルケーシングは、前記パドルが閉じたときに前記水受け部と接触する突起を有することを特徴とする請求項１に記載の流量スイッチ。 The flow switch according to claim 1, wherein the paddle casing has a protrusion that comes into contact with the water receiving portion when the paddle is closed.
  10. 　前記突起は、前記パドル流路の周囲における流路縁部に設けられることを特徴とする請求項９に記載の流量スイッチ。 The flow switch according to claim 9, wherein the protrusion is provided at a flow path edge portion around the paddle flow path.
  11. 　前記突起は、前記パドル流路の直上には突出せず、前記流路縁部の直上に収まる大きさであることを特徴とする請求項９または１０に記載の流量スイッチ。 The flow switch according to claim 9 or 10, characterized in that the protrusion does not protrude directly above the paddle flow passage, but has a size that fits directly above the flow passage edge portion.
  12. 　前記水受け部の底面における縁部を水受け縁部とすると、
    　前記突起は、前記パドルが閉じたときにパドル先端部における前記水受け縁部と接触することを特徴とする請求項９～１１の何れか一項に記載の流量スイッチ。     When the edge portion on the bottom surface of the water receiving portion is a water receiving edge portion,
    The flow switch according to any one of claims 9 to 11, wherein the protrusion comes into contact with the water receiving edge portion at the tip of the paddle when the paddle is closed.
  13. 　請求項１～１２の何れか一項に記載の流量スイッチを備えた電動ポンプ。 An electric pump equipped with the flow rate switch according to any one of claims 1 to 12.
PCT/JP2019/050338 2018-12-26 2019-12-23 Flow rate switch and electric pump equipped with same WO2020137969A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2018242269A JP7170186B2 (en) 2018-12-26 2018-12-26 Flow switch and electric pump with same
JP2018-242269 2018-12-26
JP2019-010770 2019-01-25
JP2019010770A JP2020118573A (en) 2019-01-25 2019-01-25 Flow rate switch and electric pump equipped with the same

Publications (1)

Publication Number Publication Date
WO2020137969A1 true WO2020137969A1 (en) 2020-07-02

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929861A (en) * 1972-07-13 1974-03-16
JPS53163660U (en) * 1977-05-31 1978-12-21
JPS56116670U (en) * 1980-02-07 1981-09-07
JPH08327143A (en) * 1995-05-30 1996-12-13 Matsushita Electric Ind Co Ltd Electric instantaneous water heater
US20110113894A1 (en) * 2008-03-20 2011-05-19 Reiner Brill Flow monitor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929861A (en) * 1972-07-13 1974-03-16
JPS53163660U (en) * 1977-05-31 1978-12-21
JPS56116670U (en) * 1980-02-07 1981-09-07
JPH08327143A (en) * 1995-05-30 1996-12-13 Matsushita Electric Ind Co Ltd Electric instantaneous water heater
US20110113894A1 (en) * 2008-03-20 2011-05-19 Reiner Brill Flow monitor

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